This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

You can also embed plots, for example:

## Loading required package: sp
## rgdal: version: 1.0-4, (SVN revision 548)
##  Geospatial Data Abstraction Library extensions to R successfully loaded
##  Loaded GDAL runtime: GDAL 1.11.2, released 2015/02/10
##  Path to GDAL shared files: /usr/share/gdal/1.11
##  Loaded PROJ.4 runtime: Rel. 4.8.0, 6 March 2012, [PJ_VERSION: 480]
##  Path to PROJ.4 shared files: (autodetected)
##  Linking to sp version: 1.1-1
## Warning in pal70(DENSITY): Some values were outside the color scale and
## will be treated as NA
## Warning in pal50(DENSITY): Some values were outside the color scale and
## will be treated as NA
## Warning in pal30(DENSITY): Some values were outside the color scale and
## will be treated as NA
## Warning in pal(c(r[1], cuts, r[2])): Some values were outside the color
## scale and will be treated as NA
## Warning in pal(c(r[1], cuts, r[2])): Some values were outside the color
## scale and will be treated as NA

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.